Electromagnetic stirring and rare earth refiner were applied to prepare semi-solid slurry of A356 aluminum alloy with different Ce content. The effects of electromagnetic stirring on the Ce distribution were analyed comparatively

and Ce content variation along the radius direction was analyzed. The results indicate that the alloy has a desirable refinement effect with the Ce addition of 1.0%

where the most grain shape present equiaxed structure. The electromagnetic stirring can seriously influence distribution of rare earth element

and the rare earth microsegregation occurs at the maximum rotation rate of the metal melt

thus making the rare earth atoms distributed more evenly and reducing macrosegregation.